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What I learned today - Never EVER powerwash near intercooler
What I learned today - Never EVER powerwash near intercooler
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Old 07-14-17, 08:17 PM   #1
TheOtherDave
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Exclamation What I learned today - Never EVER powerwash near intercooler

So I was testing out my new foam cannon (purchased on prime day) on my power washer while cleaning up my STI and prepping for a road trip tomorrow.....when I crossed over my intercooler

Long story short even at low(ish) pressure and a 15 degree tip from
5 feet away (from tip to intercooler) I made 2 passes across the intercooler
(before I pooped my pants and shut off the flow) where the edge of the stream
flattened a bunch of fins of the intercooler

3 hours later my wife and I got them somewhat straightened.....my back is killing me.

This is my first turbo car with an exposed intercooler so I beg the car gods
forgiveness.....but I hope I learned my lesson.

LEARN FROM MY LESSON DON'T POWER WASH YOUR INTERCOOLER.
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Old 07-14-17, 08:49 PM   #2
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Default Re: What I learned today - Never EVER powerwash near intercooler

Yea they are pretty flimsy, don't feel bad I spent hours with tweezers doing mine when I got mine used ...I learned at a car wash when I was 18 to pretty much be careful where you powerwaah any motor
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Old 07-14-17, 09:45 PM   #3
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Default Re: What I learned today - Never EVER powerwash near intercooler

https://www.amazon.com/Allstar-ALL10.../dp/B006K8GKBO

Might be of help for future powerwash adventures
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Old 07-14-17, 10:32 PM   #4
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Default Re: What I learned today - Never EVER powerwash near intercooler

From prior experience, if you get to close you can take off your wheel balancing weights.

I was quite happy how clean my inner rims were, until I moved the car and found the weights from one wheel.

And I only have a small Karcher.
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Old 07-15-17, 02:12 AM   #5
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Default Re: What I learned today - Never EVER powerwash near intercooler

Buy a 40 degree tip. 15 degree is a little aggressive. You also do not want to spray the intercooler at any sort of angle-to-the-fins. Keep the nozzle perpendicular to the fins during washing.

I have pressure washed my engine bay several times without any issue at the intercooler.

BTW, good snag on the foam cannon from PrimeDay! That price was a steal for the cannon and the gallon of wash! Nice score!

Last edited by d0zxmustang; 07-15-17 at 03:18 PM.
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Old 07-15-17, 06:49 AM   #6
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Default Re: What I learned today - Never EVER powerwash near intercooler

I don't recommended ever power washing an engine. I've always used low pressure and a brush (if needed).
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Old 07-15-17, 07:46 AM   #7
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Default Re: What I learned today - Never EVER powerwash near intercooler

It's the same thing with your radiator, don't spray it directly through your grill. I spent 2 or 3 hours straightening my fins on the intercooler just from small rocks and bugs.
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Old 07-15-17, 07:56 AM   #8
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Default Re: What I learned today - Never EVER powerwash near intercooler

When I installed the pitch stop mount I set my son down on a chair in the garage, put the intercooler on his lap, gave him a pocket knife, and put him to work. Haven't had fins that straight since it was brand new.
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Old 07-15-17, 09:33 AM   #9
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Default Re: What I learned today - Never EVER powerwash near intercooler

Double post.

Last edited by TheOtherDave; 07-15-17 at 09:38 AM.
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Old 07-15-17, 09:35 AM   #10
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Default Re: What I learned today - Never EVER powerwash near intercooler

Quote:
Originally Posted by d0zxmustang View Post
Buy a 40 degree tip. 15 degree is a little aggressive. You also do not want to spray the intercooler at any angle. I have pressure washed my engine bay several times without any issue at the intercooler. BTW, good snag on the foam cannon from primeday! That price was a steal for the cannon and the gallon of wash!
My 40 deg tip was clogged....I unclogged it after I screwed up but by then I was to scared to get it near the intercooler.

I checked the pressure (with a gauge) afterwards and I was only at 500 psi.....guess that is to much for the intercooler. I have pressure washed multiple hundred engines (put my self through college as a mechanic) and never had a problem at that low of pressure. I just avoid anything electronic and seals (such as oil fill) that lead into something else.

Oh well live and learn.

It won't be much of a problem anymore....my pressure washer pump puked out all of its oil (not engine oil) right as I was finishing up but I didn't notice until I was putting it away.

Anyone want to buy a slightly used pressure washer. I guarantee it will work for at least 30 seconds.
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